伊犁河谷城市群夏季不同粒径大气颗粒物组分特征及来源解析

代冉; 谷超; 徐涛; 李新琪; 殷宝辉; 赵雪艳; 郑镇森; 韩金保; 杨文

doi:10.12153/j.issn.1674-991X.20220598

伊犁河谷城市群夏季不同粒径大气颗粒物组分特征及来源解析

doi: 10.12153/j.issn.1674-991X.20220598

代冉^{1, 2,},
谷超³,
徐涛³,
李新琪³,
殷宝辉²,
赵雪艳²,
郑镇森²,
韩金保^1, ,,
杨文²

1.
河北大学质量技术监督学院
2.
中国环境科学研究院
3.
新疆维吾尔自治区生态环境监测总站

基金项目: 国家自然科学基金项目（51609225）；国家重点基础研究发展计划（973）项目（2012CB417004）

详细信息

作者简介:
代冉（1997—），男，硕士研究生，主要研究方向为大气污染监测，211645364@qq.com

通讯作者:
韩金保（1984—），女，副教授，博士，研究方向为环境空气污染与人体健康，jinbaobaohan@163.com

中图分类号: X51
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出版历程
- 收稿日期: 2022-06-08
- 录用日期: 2023-02-02
- 修回日期: 2022-09-19

Characteristics and sources apportionment of size-segregated atmospheric particles in Ili Valley Urban Agglomeration in summer

DAI Ran^{1, 2
,},
GU Chao³,
XU Tao³,
LI Xinqi³,
YIN Baohui²,
ZHAO Xueyan²,
ZHENG Zhensen²,
HAN Jinbao^{1
, ,},
YANG Wen²

1.
College of Quality and Technical Supervision, Hebei University
2.
Chinese Research Academy of Environmental Sciences
3.
Ecological Environment Monitoring Centre of Xinjiang Uygur Autonomous Region

摘要

摘要:
为研究伊犁河谷城市群不同城市不同粒径大气颗粒物的组分特征和来源，于2021年7月19—29日，在伊犁河谷城市群的伊宁市、伊宁县、察布查尔锡伯自治县（简称察县）和霍城县布设6个采样点采集大气PM_2.5和PM₁₀样品，对样品中的化学组分(无机元素、水溶性离子和碳组分)进行分析，并使用化学质量平衡模型对其来源进行解析。结果表明：研究期间伊犁河谷核心区城市群PM_2.5和PM₁₀浓度均处于较低水平，分别为（22.81±2.79）和（58.81±6.95）μg/m³；从空间分布来看，伊宁市和伊宁县的颗粒物浓度相对较高，霍城县和察县的浓度相对较低。化学组分质量重构结果表明，地壳元素是研究期间PM_2.5和PM₁₀的主要组分，占比分别为39.8%和54.1%；其次为有机物，占比分别为33.2%和19.8%；二次无机离子在PM_2.5和PM₁₀中也有一定占比，分别为20.2%和10.7%。源解析结果表明，PM_2.5主要来自二次颗粒物（29.1%）和扬尘源（28.3%）的贡献，工业源（16.1%）、机动车（10.5%）、燃煤源（9.3%）也均有一定贡献；PM₁₀中则以扬尘源的贡献最大（42.3%），远高于二次颗粒物（14.7%）、工业源（14.1%）、机动车（8.4%）和燃煤源（7.3%）。
- PM_2.5 /
- PM₁₀ /
- 质量重构 /
- 源解析 /
- 化学质量平衡模型 /
- 伊犁河谷
Abstract:
To analyze the composition characteristics and sources of atmospheric particulate matter with different particle sizes in Ili Valley Urban Agglomeration, PM_2.5 and PM₁₀ samples were collected at six sampling sites in four cities/counties, including Yining City, Yining County, Qapqal Xibe Autonomous County and Huocheng County from July 19 to 29, 2021. The chemical components, including elements, ions and carbon components, of these samples were analyzed, and the chemical mass balance model was used to analyze their sources. The results showed that the concentrations of PM_2.5 and PM₁₀ in the urban agglomeration in Ili Valley core area were at low levels during the sampling period, which were (22.81±2.79) and (58.81±6.95) μg/m³, respectively. Among the four cities/counties, the concentrations in Yining City and Yining County were higher than those in Huocheng County and Qapqal Xibe Autonomous County. The results of chemical mass closure analysis showed that mineral dust was the main component of PM_2.5 and PM₁₀ during the study, accounting for 39.8% and 54.1%, respectively. Organic matter was the next, accounting for 33.2% and 19.8%, respectively. Secondary inorganic ions also accounted for 20.2% and 10.7% of PM_2.5 and PM₁₀, respectively. The result of sources apportionment by chemical mass balance model showed that PM_2.5 was mainly contributed by secondary particulate matter (29.1%), dust sources (28.3%), industrial sources (16.1%), motor vehicles (10.5%) and coal combustion sources (9.3%), and PM₁₀ by dust sources (42.3%), secondary particulate matter (14.7%), industrial sources (14.1%), motor vehicles (8.4%) and coal combustion sources (7.3%).
- PM_2.5 /
- PM₁₀ /
- mass closure analysis /
- source apportionment /
- chemical mass balance model /
- Ili Valley

HTML全文

图 1 研究期间PM_2.5、PM₁₀浓度及PM_2.5和PM₁₀粒径比

Figure 1. Concentrations of PM_2.5, PM₁₀ and PM_2.5/PM₁₀ particle size ratio during the study period

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图 2 研究期间颗粒物、气态前体物浓度以及气象数据时间序列

Figure 2. Time series diagram of concentrations of particulate matter and gaseous precursors and meteorological data during the study period

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图 3 研究期间6个站点PM_2.5和PM₁₀质量重构

Figure 3. Mass closure of PM_2.5 and PM₁₀ at six sites during the study period

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图 4 伊犁河谷城市群PM₁₀和PM_2.5源成分谱

Figure 4. Source profiles of PM₁₀ and PM_2.5 in Ili Valley urban agglomeration

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图 5 伊犁河谷城市群研究期间PM_2.5、PM₁₀来源解析结果

Figure 5. Source apportionment of PM_2.5 and PM₁₀ in Ili Valley urban agglomeration during the study period

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图 6 伊犁河谷城市群6站点夏季大气PM₁₀和PM_2.5来源解析结果

Figure 6. Source apportionment of PM₁₀ and PM_2.5 at six sites in summer in Ili Valley Urban agglomeration

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表 1 伊犁河河谷核心区城市群大气颗粒物采样点位信息

Table 1. Sampling point information of atmospheric particulate matter in urban agglomeration in the core area of Ili Valley

采样点位	东经/(°)	北纬/(°)	海拔/m	周边情况
霍城县生态环境局	80.870 069 67	44.059 065 47	601	北侧为小公园，南侧为道路，东、西侧为居民区
察布查尔电视台	81.148 899 83	43.831 855 45	602	东、南和北侧为居民区
伊宁县生态环境局	81.516 573 54	43.979 775 52	740	西侧为学校，东、南侧为居民区
伊宁市生态环境局	81.281 653 30	43.939 884 19	632	东南、东北侧60 m处为2条主要交通干道，西南、西北侧为居民区
新政府片区	81.299 545 27	43.917 580 05	593	南侧为居民区，东、北两侧300 m处均为道路
第二水厂站	81.335 882 81	43.941 568 52	616	东侧700 m、南侧500 m、西侧600 m和北侧500 m均为道路，东北侧1.5~2 km处存在较多施工工地

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表 2 伊犁河谷城市群PM_2.5和PM₁₀的浓度分布

Table 2. Concentrations of PM_2.5 and PM₁₀ in Ili Valley Urban agglomeration μg/m³　

地区	PM_2.5浓度	PM₁₀浓度
霍城县	20.48±1.97	49.10±8.47
察县	22.80±4.88	57.62±13.75
伊宁县	19.64±4.71	63.25±14.94
伊宁市	24.60±4.80	60.95±12.90
平均值	22.80±4.80	58.81±13.35

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表 3 研究期间6个站点的OC/EC

Table 3. Ratio of OC/EC at six sites during the study period

监测站点	PM_2.5			PM₁₀
监测站点	OC/EC	(OC/EC)_min	(OC/EC)_max	OC/EC	(OC/EC)_min	(OC/EC)_max
霍城县生态环境局	9.7	6.6	15.4	8.6	7.5	13.7
察布查尔电视台	7.8	5.4	14.0	8.1	6.8	13.2
伊宁县生态环境局	8.1	6.1	11.1	8.7	5.4	11.7
伊宁市生态环境局	7.5	6.2	12.3	8.2	6.5	11.8
第二水厂站	6.0	4.7	12.5	6.8	5.1	8.5
新政府片区	8.7	6.8	12.9	8.4	6.1	11.4

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